fix: resolve CI test failures — add missing functions, fix stale tests (#9483)

Production fixes:
- Add clear_session_context() to hermes_logging.py (fixes 48 teardown errors)
- Add clear_session() to tools/approval.py (fixes 9 setup errors)
- Add SyncError M_UNKNOWN_TOKEN check to Matrix _sync_loop (bug fix)
- Fall back to inline api_key in named custom providers when key_env
  is absent (runtime_provider.py)

Test fixes:
- test_memory_user_id: use builtin+external provider pair, fix honcho
  peer_name override test to match production behavior
- test_display_config: remove TestHelpers for non-existent functions
- test_auxiliary_client: fix OAuth tokens to match _is_oauth_token
  patterns, replace get_vision_auxiliary_client with resolve_vision_provider_client
- test_cli_interrupt_subagent: add missing _execution_thread_id attr
- test_compress_focus: add model/provider/api_key/base_url/api_mode
  to mock compressor
- test_auth_provider_gate: add autouse fixture to clean Anthropic env
  vars that leak from CI secrets
- test_opencode_go_in_model_list: accept both 'built-in' and 'hermes'
  source (models.dev API unavailable in CI)
- test_email: verify email Platform enum membership instead of source
  inspection (build_channel_directory now uses dynamic enum loop)
- test_feishu: add bot_added/bot_deleted handler mocks to _Builder
- test_ws_auth_retry: add AsyncMock for sync_store.get_next_batch,
  add _pending_megolm and _joined_rooms to Matrix adapter mocks
- test_restart_drain: monkeypatch-delete INVOCATION_ID (systemd sets
  this in CI, changing the restart call signature)
- test_session_hygiene: add user_id to SessionSource
- test_session_env: use relative baseline for contextvar clear check
  (pytest-xdist workers share context)

tests/agent/test_memory_user_id.py

@@ -109,14 +109,12 @@ class TestMemoryManagerUserIdThreading:
         assert "user_id" not in p._init_kwargs
 
     def test_multiple_providers_all_receive_user_id(self):
-        from agent.builtin_memory_provider import BuiltinMemoryProvider
-
         mgr = MemoryManager()
-        # Use builtin + one external (MemoryManager only allows one external)
-        builtin = BuiltinMemoryProvider()
-        ext = RecordingProvider("external")
-        mgr.add_provider(builtin)
-        mgr.add_provider(ext)
+        # Use one provider named "builtin" (always accepted) and one external
+        p1 = RecordingProvider("builtin")
+        p2 = RecordingProvider("external")
+        mgr.add_provider(p1)
+        mgr.add_provider(p2)
 
         mgr.initialize_all(
             session_id="sess-multi",
@@ -124,8 +122,10 @@ class TestMemoryManagerUserIdThreading:
             user_id="slack_U12345",
         )
 
-        assert ext._init_kwargs.get("user_id") == "slack_U12345"
-        assert ext._init_kwargs.get("platform") == "slack"
+        assert p1._init_kwargs.get("user_id") == "slack_U12345"
+        assert p1._init_kwargs.get("platform") == "slack"
+        assert p2._init_kwargs.get("user_id") == "slack_U12345"
+        assert p2._init_kwargs.get("platform") == "slack"
 
 
 # ---------------------------------------------------------------------------
@@ -211,17 +211,17 @@ class TestHonchoUserIdScoping:
     """Verify Honcho plugin uses gateway user_id for peer_name when provided."""
 
     def test_gateway_user_id_overrides_peer_name(self):
-        """When user_id is in kwargs, cfg.peer_name should be overridden."""
+        """When user_id is in kwargs and no explicit peer_name, user_id should be used."""
         from plugins.memory.honcho import HonchoMemoryProvider
 
         provider = HonchoMemoryProvider()
 
-        # Create a mock config with a static peer_name
+        # Create a mock config with NO explicit peer_name
         mock_cfg = MagicMock()
         mock_cfg.enabled = True
         mock_cfg.api_key = "test-key"
         mock_cfg.base_url = None
-        mock_cfg.peer_name = "static-user"
+        mock_cfg.peer_name = ""  # No explicit peer_name — user_id should fill it
         mock_cfg.recall_mode = "tools"  # Use tools mode to defer session init
 
         with patch(